• Base your pull requests against the develop branch.
• Include these infos in the description:

• Does the pull request solve a related issue?
  Yes - solves Improvement to #3502 #3521

• If so, can you reference the issue like this Fixes #<issue_number>?
  Fixes Improvement to #3502 #3521 (also mentioned in commit message)

• What does the pull request accomplish? Use a list if needed.

• Updates duplicate module filter method (upstream vs downstream - see Multiple Instances of Node Helper running for a single module #3502)
• Updates socket io catchall functionality to new API [docs].

• Please run npm run lint:prettier before submitting
• Don't forget to add an entry about your changes to the CHANGELOG.md file.